<template>
    <div class="login_container">
        <!-- 登录盒子  -->
        <div class="login_box">
            <!-- 头像 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <el-form ref="loginFormRef" :model="loginForm" label-width="0px" class="login_form" :rules="loginFormRules">
              <el-form-item prop="username">
                <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
              </el-form-item>
              <el-form-item prop="password">
                <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" show-password></el-input>
              </el-form-item>
              <el-form-item class="btns">
                <el-button type="primary" @click="login">提交</el-button>
                <el-button type="info" @click="$refs.loginFormRef.resetFields()">重置</el-button>
              </el-form-item>
            </el-form>
        </div>
    </div>
</template>
<script>
export default {
  props: [],
  data () {
    return {
      loginForm: {
        username: '',
        password: ''
      },
      loginFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  mounted () {

  },
  methods: {
    async login () {
      // 写法1
      // this.$refs.loginFormRef.validate(valid => {
      //   console.log('valid', valid)
      // })
      // 写法2
      // this.$refs.loginFormRef.validate().then(valid => {
      //   console.log('valid', valid)
      // }).catch(e => {
      //   console.log('error', e)
      // })
      // 写法3
      // const p = this.$refs.loginFormRef.validate()
      // p.then(valid => {
      //   console.log('valid', valid)
      // }).catch(e => {
      //   console.log('error', e)
      // })
      // 写法4
      try {
        await this.$refs.loginFormRef.validate()
        // post-json url-encoded
        const { data: res } = await this.$http.post('login', this.loginForm)
        // console.log(valid)
        console.log(res)
        if (res.meta.status === 200) {
          // 登录成功
          // 通过elme写
          this.$message({
            message: '登录成功',
            type: 'success',
            showClose: true
          })
          sessionStorage.setItem('token', res.data.token)
          // 跳转到首页
          this.$router.push('/home')
        } else {
          // 登录失败
          this.$message({
            message: '登录失败',
            type: 'error',
            showClose: true
          })
        }
      } catch (error) {
        console.log('error', error)
      }
    }
  }
}
</script>
<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);// TODO:不知道transform的用户
  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
